JP2009009983A - Panel type light emitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a panel type light emitting device which is suitably made lightweight and thin and can improve flexibility of selection of an arrangement configuration etc., of a light emitting unit and lighten a burden of specification change in arrangement configuration of the light emitting unit. <P>SOLUTION: A panel type light emission portion 13 of the light emitting unit 5 is disposed on the front side of a plate-shaped base 3 in a nearly flat plate shape. The light emitting unit 5 is fitted by inserting a back projection portion 15 of the light emitting unit 5 into the back side of the plate-shaped base 3 through a through hole 11 and threadedly engaging a nut member 29 with a screw portion 27 of the back projection portion 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a panel type light emitting device installed in various machines or production lines installed as production equipment in a factory or the like, for example.

  In factories and the like, various indicator lamps are installed in the vicinity of machinery in order to inform surrounding workers and the like of the operating status or maintenance time of various machinery installed as production equipment. In addition, an indicator lamp is installed in the production line to ensure the safety of workers and the like.

There exists a thing of patent document 1 as this kind of conventional indicator light. In this prior art, a plurality of light emitting units are accommodated and held in a case. Moreover, in patent document 2, the indicator lamp (LED display device) attached to the through-hole of an attachment panel is disclosed.
JP-A-9-44101 JP-A-9-68940

  However, in the configuration in which the light emitting unit is accommodated and held in the case as in Patent Document 1, it is necessary to increase the thickness of the case in order to ensure the mechanical strength of the case, and the like, which is heavy and difficult to reduce in thickness. was there. In addition, the size, shape, etc. of the case limit the number of light emitting units to be installed, the degree of freedom of selection regarding the arrangement position, and the size, and the burden when changing specifications such as the arrangement form of the light emitting units is large. There was also a problem. Moreover, in patent document 2, since the indicator lamp is only attached to the mounting panel by inserting the case from the front into the through hole of the mounting panel and tightening the lock nut from the rear, the contact area of the mounting panel is small, There is a problem that heat does not easily escape from the lamp to the panel.

  Accordingly, the problem to be solved by the present invention is that it is lightweight and suitable for thinning, can improve the degree of freedom in selecting the arrangement form of the light emitting unit, and can reduce the burden when changing the specifications of the arrangement form of the light emitting unit. It is providing the panel type light-emitting device with good property.

  In order to solve the above problems, in the invention of claim 1, a plate-like base provided with at least one through-hole and a face-to-face detachable arrangement with the through-hole of the plate-like base interposed therebetween And a light emitting unit having a panel-type light emitting portion capable of emitting light in a substantially planar shape, and at least one device main body including a drive unit for driving the light emitting unit through the through hole.

  According to a second aspect of the present invention, in the panel type light emitting device according to the first aspect of the present invention, the light emitting unit is provided on the back side of the light emitting part, and the back surface of the plate-like base is provided through the through hole. The panel-type light emitting device further includes fixing means for fixing the rear surface convex portion of the light emitting unit on the rear surface side of the plate-like base.

  According to a third aspect of the present invention, in the panel type light emitting device according to the second aspect of the present invention, the fixing means includes a screw portion formed on an outer periphery of the back convex portion, and the plate-like base on the screw portion. And a nut member that sandwiches the outer peripheral portion of the through hole of the plate-like base between the light emitting portion and the light emitting portion.

  According to a fourth aspect of the present invention, in the panel-type light emitting device according to the second aspect of the present invention, the bias is directed toward the outer peripheral surface of the rear convex portion of the light emitting unit, which is provided on the rear side of the plate-like base. A holding member that holds the back surface convex portion and a biasing means that biases the holding member.

  According to the first aspect of the present invention, since the panel-type light emitting portion of the light emitting unit is arranged on the front side of the substantially flat plate-like base, the conventional light emitting unit is accommodated and held. In this case, the weight and thickness can be reduced, the degree of freedom in selecting the arrangement form of the light emitting unit, etc. can be improved, and the burden when changing the specifications of the arrangement form of the light emitting unit, etc. can be reduced. Can be reduced.

  Moreover, since the light emitting unit and the drive unit sandwich the mounting panel facing each other, the heat generated from each of the light emitting unit and the drive unit can be transmitted to the mounting panel on the front and back surfaces of the mounting panel, thereby improving heat dissipation. Can do.

  Furthermore, since at least one through-hole is provided in the plate-like base, for example, a drive unit that generates heat by guiding the wiring of the light emitting unit to the back side of the plate-like base using the through-hole. Can be installed on the back side of the plate-like base, and the heat generated by the drive unit can be blocked from being transmitted to the light emitting part on the front side of the plate-like base, and the heat can be transmitted by the plate-like base. Heat can be radiated efficiently. Thereby, the influence on the light emitting part of the light emitting unit by heat can be reduced, and the light emitting units can be arranged more densely.

  According to the second aspect of the present invention, the attachment of the light emitting unit to the plate-like base is a configuration in which the rear protrusion protruding from the back side of the plate-like base through the through hole is fixed by the fixing means. With a simple configuration, it can be securely fixed.

  According to the invention described in claim 3, since the light emitting unit is fixed by screwing the nut member to the screw portion provided on the rear convex portion of the light emitting unit, the light emitting unit can be fixed easily and reliably. It can be carried out.

  According to the fourth aspect of the present invention, the light emitting unit is easily and reliably fixed because the rear projection of the light emitting unit is held and fixed by the holding member biased by the biasing means. be able to.

  1 is an exploded perspective view of a panel-type light emitting device according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a rear view thereof, and FIG. 4 is a side view thereof. 5 is an enlarged cross-sectional view of a part thereof. For example, in a factory or the like, the panel type light emitting device 1 is installed in the vicinity of machinery in order to notify surrounding workers and the like of the operation status or maintenance timing of various machinery installed as production equipment. There are examples that are used to secure the safety of workers and the like in the production line.

  As shown in FIGS. 1 to 5, the panel-type light emitting device 1 according to this embodiment includes a plate-like base 3 and at least one (a plurality in this embodiment) arranged on the plate-like base 3. The apparatus main body is composed of a light emitting unit 5 and a drive unit for driving the light emitting unit 5 (a part composed of the rear case 31 and the current control unit 47). In addition, a plurality of light emitting areas 7 that are individually controlled to be lighted are provided on the front side of the panel light emitting device 1, and a cover member 9 whose front surface portion is light transmissive for each light emitting area 7 is provided. It is installed. Each light emitting area 7 is provided with one or a plurality of light emitting units 5.

  As shown in FIGS. 1 and 6, the plate-like base 3 has a substantially flat shape made of a material having high thermal conductivity (for example, metal), and has a plurality of through holes for attaching the light emitting unit 5. 11 is provided. The diameter of the through hole 11 is set to be smaller than the light emitting portion 13 of the light emitting unit 5 described later and slightly larger than the rear convex portion 15. For example, the through holes 11 are provided in a matrix.

  The light-emitting unit 5 includes a panel-type light-emitting portion 13 capable of emitting light in a substantially planar shape, and a back convex portion 15 protruding from the back side of the light-emitting portion 13 as shown in FIGS. Yes. The light emitting unit 13 includes, for example, a base portion 21 formed of resin or the like, and a light emitting element portion 23 provided on the front side of the base portion 21, and has a thin panel shape. is doing.

  The light-emitting element unit 23 includes, for example, a substrate 23a, an LED array 23b disposed on the substrate 23a, and a light guide member 23c. The LED array 23b includes a plurality of LEDs arranged in a row, and is arranged at the edge of the light emitting unit 13. The light L emitted from the LED array 23b is transmitted to the panel by the light guide member 23c. The light is reflected from the front side of the mold light emitting device 1, is uniformized, and is emitted from the front surface portion of the cover member 9 that is the light emitting surface of each light emitting region 7. Thus, each light emitting region 7 emits light in a substantially planar shape.

  In the present embodiment, the light emitting element portion 23 is configured by using an LED. However, a fluorescent tube may be used instead of the LED, or if the light emission is thin and substantially planar, the EL can be used. (Electro Luminescence) element, FED (Field Emission Display), etc. may be used.

  The back convex part 15 is formed with resin etc., for example, is integrally formed with the base part 21. FIG. Such a back convex portion 15 is inserted into the through hole 11 of the plate-like base 3 from the front side to the back side when the light-emitting unit 5 is attached to the plate-like base 3, and is used for fixing the light-emitting unit 5 or the like. It has come to be.

  Such a light emitting unit 5 is arranged such that the light emitting portion 13 is in close contact with the front surface side of the plate-like base 3 and the back convex portion 15 is passed through the through hole 11 and protrudes to the back side of the plate-like base 3. Established.

  As the fixing means 25 for fixing the light emitting unit 5, a screw portion 27 having a screw groove formed on the outer peripheral portion of the back surface convex portion 15 of the light emitting unit 5, and a nut member 29 screwed into the screw portion 27. And are provided. The nut member 29 has an outer diameter larger than the inner diameter of the through-hole 11, is screwed into the screw portion 27 of the rear convex portion 15 from the back side of the plate-like base 3, and is plate-shaped between the light emitting portion 13. The outer peripheral part of the through-hole 11 of the base 3 and the front side part 31a of the rear case 31 to be described later are sandwiched. As a result, the light emitting unit 5 and the rear case 31 are fixed to the plate-like base 3.

  A rear case 31 is provided on the back side of the plate-like base 3 so as to surround the back convex portion 15, the fixing means 25, the wiring connection portion and the like of the light emitting unit 5. For example, as shown in FIG. 5, the rear case 31 has a configuration in which the front side portion 31 a and the back side portion 31 b are divided into two parts in the front-rear direction. The front portion 31a and the back portion 31b are engaged with each other by an engagement structure (for example, an engagement claw 33 and an engagement surface (or engagement step portion) 35 with which the engagement claw 33 is engaged). It is supposed to be locked. The front portion 31a is provided with a through hole 37 through which the rear convex portion 15 is inserted.

  The rear case 31 is attached, for example, by first attaching the front wall portion of the front portion 31a together with the plate base 3 with the nut member 27, and attaching the back portion 31b to the front portion 31a. This is done by fitting and engaging.

  Electrical connection of the light emitting unit 5 and the like is performed as follows. A terminal portion (for example, a contact terminal) 38 is provided on the back side of the light emitting unit 5, and a wiring 39 connected to the electrical connection portion 37 is electrically connected to the substrate 23a. That is, the LED array 23b is electrically connected to the terminal portion 38 via a wiring pattern and wiring 39 (not shown) provided on the substrate 23a.

  Further, a substrate 41 is provided in the back portion 31b of the rear case 31, and a terminal portion (not shown) on the substrate 41 and a terminal portion 38 of the light emitting unit 5 are connected to an electrical connection member for relay (for example, , A contactor 43 having a spring property). For example, the electrical connection member 43 is attached in advance to the substrate 41 side or the light emitting unit 5 side, and is connected to the front-side portion 31a of the back-side portion 31b of the rear case 31 and is connected to a counterpart terminal. Touch the part. Thereby, the terminal part on the substrate 41 and the terminal part 38 of the light emitting unit 5 are electrically connected by the electric connecting member 43. In the case of this configuration, since the electrical connection in the rear case 31 is completed with the mounting work of the rear side portion 31b of the rear case, there is an advantage that the electrical connection work in the rear case 31 can be simplified.

  Further, an external terminal 45 is provided on the back side of the rear case 31, and the terminal portion 38 of the light emitting unit 5 is electrically connected to the external terminal 45 via an electric connection member 43 and a wiring pattern (not shown) of the substrate 41. It has become so.

  As shown in FIGS. 3 and 4, a current control unit (current control unit) 47 that performs current control and the like is installed on the rear side of the rear case 31. The current control unit 47 performs AC to DC conversion, voltage conversion, and the like, and is electrically connected to the external terminal 45. Further, on the back side of the current control unit 47, a terminal portion 47a to which a power line or the like is connected is provided. One current control unit 47 is provided for each of one or a plurality of light emitting units 5 provided in one light emitting region 7.

  By providing the current control unit 47 on the back side of the plate-like base 3 in this way, the light-emitting portion 13 of the light-emitting unit 5 that is relatively weak against heat and the current control unit 47 that is a heat source are provided on the plate-like base 3. Will be cut off. As a result, the influence of the heat generated from the current control unit 47 on the light emitting unit 13 is reduced, and the heat generated by the current control unit 47 and the light emitting unit 13 can be efficiently radiated by the plate-like base 3. It has become.

  As described above, the light emitting unit 5 drive unit (the rear case 31 and the current control unit 47) is detachably faced with the through hole 11 of the plate-like base 3 interposed therebetween.

  In the panel type light emitting device 1 according to the present embodiment having such a configuration, the panel type light emitting unit 13 of the light emitting unit 5 is disposed on the front side of the substantially flat plate-like base 3. A case for accommodating and holding the light emitting unit as in the past can be omitted. As a result, the panel light-emitting device 1 can be reduced in weight and thickness.

  In addition, by arranging the through holes 11 of the plate-like base 3 in a matrix shape with an arrangement pitch corresponding to the size of the light emitting unit 5, for example, the arrangement form of the light emitting units 5 can be freely changed, and the light emitting region 7 can be freely set in size, outer diameter shape, etc., and the parts such as the light emitting unit 5 can be easily shared, so that the burden of changing the specifications of the arrangement of the light emitting unit 5 can be reduced. It has become.

  In addition, the metal plate-like base 3 can block the heat generated by the current control unit 47 from being transmitted to the light emitting unit 13 of the light emitting unit 5, and the heat of the current control unit 47 and the light emitting unit 13 can be reduced. It is possible to efficiently dissipate heat by the shaped base 3. Thereby, the influence on the light emission part 13 of the light emission unit 5 by a heat | fever can be reduced, and the light emission units 5 can be arrange | positioned more densely.

  Further, since the nut member 29 is screwed into the screw portion 27 provided on the rear surface convex portion 15 of the light emitting unit 5, the light emitting unit 5 and the front portion 31 a of the rear case 31 are fixed to the plate-like base 3. The light emitting unit 5 and the rear case 31 can be fixed easily and reliably.

  FIG. 7 is a plan view inside the rear case showing a modification of the fixing means of the light emitting unit shown in FIG. In the configuration shown in FIG. 7, the fixing means 25 includes a pair of holding members 51 provided so as to be slidable in the sliding direction A <b> 1 and an urging means 53 including a compression coil spring or a leaf spring. Both holding members 51 are slidably held in a sliding direction A1 that is close to and away from each other by a slide holding portion 55 provided on the front portion 31a of the rear case 31 or the like. A concave portion 51 a corresponding to the shape of the outer peripheral surface of the back convex portion 15 is provided in a portion of the both holding members 51 that contacts the back convex portion 15 of the light emitting unit 5. The urging means 53 is provided for each holding member 51 and urges the holding member 51 toward the back convex portion 15 inserted between the holding members 51.

  The light emitting unit 5 is attached, for example, by the operator manually sliding both holding members 51 in directions away from each other (or by pushing the back convex portion 15 of the light emitting unit 5 into the two holding members by the back convex portion 15. 51) while sliding the projections 51 in directions away from each other), with the rear projections 15 of the light emitting unit 5 interposed between the holding members 51 through the through holes 11 of the plate-like base 3, It is carried out by sliding in the directions close to each other by the urging force of the urging means 53 and abutting and holding (clamping) the back convex portion 15 from both sides. In this case, an engagement structure such as a groove portion or a step portion that fits with the holding member 51 and prevents the rear surface convex portion 15 from coming off may be provided on the outer periphery of the rear surface convex portion 15.

  FIG. 8 is a perspective view showing a further modification of the fixing means of FIG. As the urging means 53 for urging the holding member 51, a substantially U-shaped wire spring as shown in FIG. 8 may be used. In this case, a locking portion 51b such as a groove for fitting a wire spring is provided on the side surface portion on the outside of the holding member 51. When adopting such a configuration, the slide holding portion 55 holding the holding member 51 may be omitted.

  FIG. 9 is a perspective view showing a further modification of the fixing means of FIG. Instead of the holding member 51 and the urging means 53 of FIG. 7, a fixing member 57 having a substantially U-shaped cross section having a spring property integrally formed of resin or metal may be used. The fixing member 57 is provided with a pair of spring-like elastic arm portions 59 that are elastically deformed and change in distance from each other. Then, the light emitting unit 5 is fixed by the fixing device 57 by attaching the elastic arms 59 so that the distance between the elastic arm portions 59 is increased and the rear convex portion 15 of the light emitting unit 5 is sandwiched. Preferably, an arc-shaped curved portion 59a corresponding to the shape of the outer peripheral surface of the back convex portion 15 is provided in a portion of the elastic arm portion 59 that sandwiches the back convex portion 15, and the inner peripheral surface of the curved portion 59a and It is preferable to provide a concave and convex fitting structure 61 that fits on the outer peripheral surface of the back convex portion 15. The fitting structure 61 is configured by, for example, a groove or a convex portion that is continuous in the circumferential direction of the back convex portion 15.

  FIG. 10 is a sectional view showing a further modification of the configuration shown in FIGS. 10 will be described based on the configuration shown in FIG. 7 as a representative example, but the technique according to FIG. 10 can be easily applied to the configuration shown in FIG. 8 or FIG.

  In the configuration shown in FIG. 10, in the configuration shown in FIGS. 7 to 9, the holding member 51 (or the fixture 57) is fixed in advance to the rear case 31 side, and the outer peripheral surface of the rear surface convex portion 15 of the light emitting unit 5. An uneven engaging portion 63 having an uneven shape such as a substantially bellows shape or a screw groove shape is provided, and the back surface protruding portion 15 is pushed between the holding members 51 (or between the elastic arm portions 59 of the fixing device 57) with an unevenness. The holding member 51 is engaged with any one of the grooves of the engaging portion 63 so as to prevent it from coming off. In this case, since the grooves of the concavo-convex engaging portion 63 are provided at a constant pitch, the distance between the holding member 51 and the light emitting portion 13 of the light emitting unit 5 is the front wall portion of the plate-like base 3 and the rear case 31. It is difficult to make it coincide with the total thickness of the film, and a gap is generated in that portion.

  Therefore, in the configuration shown in FIG. 10, in order to prevent rattling due to the gap, the front case portion 31 a of the rear case 31 is urged in a direction away from each other between the front wall portion and the plate-like base 3. A biasing means 65 (for example, a compression coil spring, a leaf spring, a rubber member, etc.) is provided to prevent rattling. An accommodation recess 67 for accommodating the urging means 65 is provided on the front wall portion of the front portion 31 a of the rear case 31. In the configuration shown in FIG. 10, the biasing means 65 is provided between the front wall portion of the rear case 31 and the plate-like base 3, but the light-emitting portion 13 of the light-emitting unit 5 and the plate-like base 3 You may make it provide in between.

  In the above-described embodiment and modification, the case where the drive unit is configured by the rear case 3 and the current control unit 47 has been described. However, the present invention is not limited to this. For example, the function of the current control unit 47 is built in the rear case 3. May be. In addition to the light emitting unit, the light emitting unit 5 may be provided with a transparent push button switch in front of the light emitting unit as disclosed in, for example, JP-A-8-235961. Further, the plate-like base 3 may be a single plate as shown in FIG. 6, or may be a part of the casing of the control panel.

It is a disassembled perspective view of the panel type light-emitting device which concerns on one Embodiment of this invention. It is a front view of the panel type light-emitting device of FIG. It is a rear view of the panel type light-emitting device of FIG. It is a side view of the panel type light-emitting device of FIG. It is sectional drawing to which some panel type light-emitting devices of FIG. 1 were expanded. It is a top view of the plate-shaped base with which the panel type light-emitting device of FIG. 1 is equipped. It is a top view in the rear case which shows the modification of the fixing means of the light emission unit shown in FIG. It is a perspective view which shows the further modification of the fixing means of FIG. It is a perspective view which shows the further modification of the fixing means of FIG. It is sectional drawing which shows the further modification of the structure shown in FIG. 7 thru | or FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Panel type light-emitting device, 3 plate-shaped base, 5 light emission unit, 7 light emission area | region, 9 cover member, 11 through-hole, 13 light emission part, 15 back convex part, 21 base part, 23 light emitting element part, 23a board | substrate, 23b LED array, 23c light guide member, 25 fixing means, 27 screw portion, 29 nut member, 31 rear case, 31a front side portion, 31b back side portion, 33 engagement claw, 35 engagement surface (or engagement step portion) , 47 Current control unit, 51 holding member, 53 biasing means, 57 fixing tool, 63 uneven engagement portion.

Claims (4)

A plate-like base provided with at least one through hole;
A light-emitting unit having a panel-type light-emitting portion that can emit light in a substantially planar shape, which is detachably faced with the through-hole of the plate-like base in between, and the light-emitting unit are driven through the through-hole. At least one device body including a drive unit;
A panel-type light-emitting device comprising: The panel type light emitting device according to claim 1,
The light emitting unit is further provided with a back convex portion that is provided on the back side of the light emitting portion and protrudes to the back side of the plate-like base through the through hole,
The panel-type light-emitting device further includes a fixing unit that fixes the rear surface convex portion of the light-emitting unit on the back side of the plate-like base. The panel-type light-emitting device according to claim 2,
The fixing means includes
A screw portion formed on the outer periphery of the back convex portion;
A nut member screwed into the screw part from the back side of the plate-like base and sandwiching the outer peripheral part of the through hole of the plate-like base between the light-emitting part,
A panel-type light-emitting device comprising: The panel-type light-emitting device according to claim 2,
A holding member that is provided on the back surface side of the plate-like base, abuts in a state of being biased toward the outer peripheral surface of the back surface convex portion of the light emitting unit, and holds the back surface convex portion;
Biasing means for biasing the holding member;
A panel-type light-emitting device comprising:

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